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# Core Data
Internal device data memorization in integrated DB.
Used to store data from API for offline use.
The data added or update at app launch from the APIs.
## CoreData Structure
CoreData are handled by the file `.xcdatamodel` which contains info about the *Entities* that will contain data.
The structure is similar to a DB on file (postgreSQL, sqlite).
Entities are equivalent to relational DBs tables.
An Entity is identified by a name what will be used in read/write operations.